Gearing for metal working machines



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UNHTED STATES 1,645,194 PATENT OFFICE.

FRANK S. JONES, OF PHILADELPHIA, PENNSYLVANIA.

GEARING FOR METAL WORKING MACHINES.

Application filed February 13, 1923, Serial No. 618,786. Renewed March1, 1927.

My invention relates to metal cutting machines of the boring mill typeadapted to perform a number of operations which ordinarily requireseparate machines.

The objects are to provide new and 1mproved controlling means for suchmachines whereby quick and accurate manipulat on 1S possible whenworking metal of any size or shape; to provide power controll ng meansand hand controlling means having fewer parts than heretofore deemedpossible, thereby reducing theup-keep to a mln mum, and increasing theaccuracy to a maximum.

These objects, and other. advantageous ends, which will be describedhereinafter, I attain in the following manner, reference being had tothe accompanying drawings in which Figure l is a front elevatlon of amachine embodying my invention,

Figure 2 is a side view of Figure 1,

Figure 3 is a section taken on the line 33 of Figure 2,

Figure 4: is a section 4-4 of Figure 3,

Figure 5 is a section 5-5 of Figure 4,

Figure 6 is a section 6.6 of Figure 5,

Figure 7 is a section 7-7 of Figure 4,

Figure 8 is a section 8-8 of Figure 7, drawn on a smaller scale,

Figure 9 is a section taken on the line 9-9 of Figure 7, also drawn on asmaller scale,

Figure 10 is a developed section of change speed gearing takensubstantially on the line 1010 of Figure 4:, also partly showing thefeed mechanism, a

Figure 11 is a developed section of a shifting gear and hand controllingmeans,

Figure 12 is a face view of the back plate of the saddle showing thearrangement of certain gears; v

Briefly, the invention includes transmission of power through the speedchange gearing to actuate the feed change gearing; means for connectingthe feed change gearing with mechanism for imparting endwise movement tothe spindle, vertical movement to the saddle or horizontal movement tothe taken on the line taken on the line taken on the line taken on theline taken on the line column; means for reversing the movements Speedciumge gearr'ing.

Spur gear 8 meshes with a gear 10 fixed to a pinion 11 keyed to a shaft12 mounted in bearings cast integrallyy with the saddle. The pinion 11meshes with a gear 13 on a shaft 14 mounted in bearings cast integrallywith the saddle. Shafts 12 and 14, hereinafter called series shafts,have series gears mounted thereon. Shaft 12 has rotatahly mounted seriesgears Hand 16, which are designed with clutch engaging parts 15 and 16respectively, to engage clutch members 17 and 18 fixed to shaft 12, andshaftl i has afixed series gear 19 adapted to mesh with series gear 16.The series gears 15 and 16 are cast together and have'between them-anannular groove into which fits the end of an arm 15 actuated by a lever-16 outside of the saddle.

A shaft 20, journaled in bearings cast inte- I grally with the saddle,has fixed thereto intermediate gears 21, 22, 23 and 24 adapted to meshwith their respective speed change gears 25, 26, 27 and 28 slidablykeyed to a shaft 29 j ournaled in bearings cast integrally with thesaddle. The gears and 26 are cast together and have between them anannular groove 30,"inxwhich fits a yoked member 31 secured to a squareshifting rod 32 sliding in bearings fixed to the saddle. Gears 27 and 28are cast together and have between them an annular groove 33, into whichfits a yoked member 34 fixed to a square shifting rod 35 sliding inbearings fixed to the saddle. Shiftingrods 32 and 35 have notches 36 and37 on their adjacent faces adapted to receive-the end of a shiftinglever 38 universally mounted on a bracket fixed to the saddle. Shaft 29extends out of the saddle and has keyed thereto a driving pinion 39which meshes with a bull gear 40 fixed to a. sleeve 41, journaled inmain hearings 42 and 43, and having a spindle or tool bar 44, slidablykeyed therein, to which cutting tools may be secured in the usualmanner.

The operation of the speed gearing is as follows: Three series of speedswith four speeds to each series are transmitted to the spindle 44through the series shafts, series gears and speed change gears. Thefirst series of speeds are transmitted to shaft through the series shaft14, fixed series gear 19, rotatably mounted series gears 16 and 15 andgear 23. The four speeds are transmitted to the spindle 44 througheither of the shifting gears 25. 26, 27 or 28 by shifting them, by meansof the universally mounted lever 38, into mesh with their respectivegear The second series of speeds is transmitted to shaft 20 throughseries shaft 12, clutch member 17, series gear 15 and gear 23.

The third series of speed is transmitted re shaft 20 through seriesshaft '12, clutch member 18, series gear 15 and gear 24.

The eight speeds of the second and third series are transmitted tospindle 44 by shifting either of the gears 25, 26, 27 and 28 inIQIieSl'l with its respective gear 21, 22, 23 or Change feed gearing andreversing mechamlsm therefor.

Shaft 29 has a gear 45 frictionally coupled thereto and hereinaftercalled a friction gear. Gear 45 meshes with a gear 46 interal with a ear47 rotatably mounted on a xed shaft 4 The frictional coupling permitsgear 45, in case of sudden or excessive strains, to rotate relatively toits shaft there- 3y avoiding danger of stripping the gears.

he gear 47 meshes with gear 49 cast integra ly with bevel gear 50meshing with bevel gear 51 which in turn meshes with another bevel gear52. Bevel gears 50 and 52 are rotatably mounted on a shaft 53, andbevel'gear 51 is rotatably mounted in a bearin fixed to the saddle.

55 actuated by a lever 56, to engage either 50 and 52 to impart forwardor reverse movement. The parts beginning with the reference character 50and ending with 58 constitute thereversing mechanism for the feed changegears. A'shaft 53, which is 1ournaled in bearings cast integrally withthe saddle, has fixed thereto a gear 59, which meshes with a gear 60 ofa group of gears 60, 61, 62, 63, 64, 65, 66, 67 and 68, to impart amovement to a selective series of gears.

Gears 60, 62, 64' and 66 are respectively fixed to rotatably mountedpinions, 61, 63, and 67. Pinion 61 meshes with gear 62, pinion 63 withgear 64, pinion 65 with gear A clutch 54 slidab y keyed to shaft 53 ismoved, by an arm- 66 and pinion 67 with gear 68. Pinions 61 and 65 arerotatably mounted on a shaft 69, gear 68 is fixed to shaft 69 to preventendwise movement, and pinions 63 and 67 are rotatably mounted on a shaft69 fixed to the saddle. A gear 70, slidably keyed on a shaft 71, has anannular groove 72 adapted to receive theend of an .arm 73 actuated by alever 74, and may be moved into engagement with either of the feedseries gears 60, 64 or 68. Shaft 71 is mounted in bearings castintegrally with the saddle and has an angular part 76 on which ismounted a gear 77 meshing with a tumbler gear 78 adapted to engage anyof the change gears 79, 80, 81 and 82,-which are keyed to a shaft 83mounted in hearings fixed to the saddle. The tumbler gear 7 8 is mountedon an arm 78 pivoted on the hubs of gear 77, concentrically with shaft76, and having on its end a spring-pressed latch adapted to hold thegear in mesh. Gear 82 meshes with a gear 84, which is rotatably mountedon sleeve 41 and meshes with a wide face gear 86 fixed to a shaft 87having slidably keyed thereon a shifting gear 88 which is shifted by anarm 89 secured to a. shaft 90 having fixed thereto a lever 91 outside ofthe saddle.

The operation of the feed change gears is as follows: the power istransmitted to shifting gear 88 from the speed change gearing, throughfriction gear 45; gears 46, 47 and 49; bevel gears 50, 51 and 52. Whenthe feed change gears are rotating in one direction, clutch 54 engagesclutch face 57 on bevel gear 50 and. when rotating in oppositedirection,clutch 54 engages clutch face 58 on bevel gear 52, and transmitsthepower to shaft 53, gear 59, gear 60, 64 or 68, slidably keyed gear70, shaft 71, gear 77. tumbler gear 78, gear 79, 8O, 81 or 82, gear 84,

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wide face gear 86, shaft 87, to shifting gear The change feed gearingthus described is used to vary the endwise feed of the spindle; thevertical feed of the saddle, horizontal feed of the column or themovement of any other element deriving its power from the column feedshaft.

Spindle feed mechanism.

The spindle feed mechanism comprises agear 92 keyed to a shaft 93 havinga feed screw part 94 fitting within a screw threaded nut 95 fixed in abearing 96 rotatably secured to spindle 44.

Saddle adjusting mechanism.

gear 100 having a depending sleeve 101 in ternally threaded to receive asaddle adjusting screw 102 fixed in the top of the column.

The depending sleeve 101, which is j ournaled in a bearing 103, has ballbearingsv interposed between the bottom of its bearing 103 and asecuring nut 104.

Column adjusting mechanism.

The column adjusting mechanism coniprises a gear 105 east with a spiralgear 106 rotatably mounted on the fixed shaft 99. Spiral gear 106 mesheswith a spiral gear 107 sphned to a, column feed shaft 108 mounted inhearings in the column. The

'column shaft 108 extends vertically from the saddle and is adapted foruse in transmitting movement to any suitable parts on a machine, such asthe column, work-table, etc. The mechanism for effecting thistransmission may be of any suitable type.

\Vhen it is desired to move the spindle cndwise, the saddle verticallyor the column horizontally, shifting gear 88, may be actuated by lever91, to mesh with gear 92, 97 or 105. A very rapid movement is effectedby shifting gear 84 until a frusto-conical clutch member 109 engages aclutch member 110 east with a gear 111 rotatably mounted on sleeve 41,and held in place by a ring 112. Gear 111, meshes with a bypass-gear 113fixed to the series shaft 14. It will be seen that, by shifting clutchmember 109 into engagement with clutch member, 110, by a lever 114through the medium of a hollow shaft 115, passing over shaft 90, and

a yoke 116, gear 84 will be out of mesh with gear 82 but still in meshwith the wide face gear 86 and a very rapid movement of the I spindle,saddle or column is effected through a train of gears which by-passesthe speed change and feed change gearing.

The hand-controlling mechanism comprises a hand-wheel .117 secured toshaft 118; mounted in bearings fixed to the saddle. Shaft 118 has at itsend a fixed bevel gear 1l9'meshing with a bevel gear 120 fixed on shaft87 which carries the shifting gear 88. If it is desired to control thefeed of the' spindle,'saddle or column by hand, shifting gear 88 ismoved in mesh with the gear 92, 97 or 105, the same as when operated bypower except that the change feed gearing is disconnectedwith the motor3, andthus a hand controLis effected through very few parts.

Sleeve 41 which forms the immediate support for the spindle extendsthrough the with change gear 79, 80, 81 or 82. Thus the series gears 60,64 and 68 impart three different feeds to the change gears 79, 80, 81and 82, making a total of twelve different feeds from the feed changinggearing.

\Vhen it is desired to reverse the feed change gears and consequentlythe spindle, saddle or column, assuming clutch 54,1;0 be in engagementwith clutch face 57 of gear 50, lever 56 is moved to shift the slidablykeyedclutch 54 into clutching engagement with the opposite clutch face58 of gear 52 and a reverse movement will be imparted, as gear 52rotates in the opposite direction to gear 50 due to the interpositioningof gear 51.

To disconnect the feed change gears, and consequently the spindle,saddle or column, from the speed change gears and motor, clutch 54 isshifted by lever 56 out of engagement with clutch faces 57 and 58. andheld in a neutral position between them. Thus the feed change gears aredisconnected from the speed change gears, as bevel gears 50 and 52.having the clutch faces thereon, are rotatably mounted on shaft 53.

When it is desired to change the speed of the cutting tool; that is, thespeed of rotation, and endwise feed, of the spindle; or the speed ofrotation of the spindle, and vertical feed of the saddle; or the speedof rotation of the spindle, and the horizontal feed of the column, itmay be done by simply shifting the speed change gears with levers 16 and38. By moving lever 38, downward and sidewise, the inner end willdisengage.

notch 36 and engage notch 37, and move gears 27 and 28 through themedium of shifting rod 35.

By moving lever 38 upward and sidewise, the 1111-31 end will dis-.

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consequently change gears 23, 26, 27 or 28 1 making a total of twelvespeeds from the speed change gearing.

The feed of the spindle, saddle or column is changed proportionately,thus saving considerable time by avoiding manipulation of a number oflevers for the proportionate change in feed.

When a very rapid movement is desired of the spindle endwise, the saddlevertically, or the column horizontally, lever 114 is moved upward toeffect an engagement of frusto conical clutch member 109 with clutchmember 110 and move gear 8 1, which is fixed to' the frusto-conicalclutch member 109, out-of mesh with gear .82 but keep in mesh with wideface gear 86. Thus a very rapid movement of either the spindle, saddleor column may be effected through by-pass gear 113, gear 111, clutchmembers 110 and 109, gear 84, and wide face gear 86.

To control by hand the endwise feed of the spindle; the vertical feed ofthe saddle; or horizontal feed of the column, the feed change gears aredisconnected from the speed change gears by moving lever 56 so thatclutch 54 will be in a neutral position. The shifting gear 88 is movedby lever 91 intomesh with either gear 92, 97 or 105 respectively of thespindle, saddle and column mechanism,'hand wheel 117 is turned and amovement of either the spindle, saddle or column is then effected.

The direction of motion of the several chains of gearing may be reversedby reversing the motor, and the direction of motion of the feed changegearing may be independently reversed by moving lever 56 so that clutch54 will engage the opposite face.

If it is desired to reverse the rotation of the spindle and continue thefeed in the same direction, lever 56 is moved to engage clutch 54 withthe opposite clutch face;

While I have described my invention as taking a particular form, it willbe understood that the various parts of my invention 'may be changedwithout departing from the spirit thereo and hence I do not limit myselfto the precise construction set forth, but consider that I am at libertto make such changes and alterations as fairly come within the scope ofthe appended claims.

Having thus described my invention, what Iv claim as new and desire tosecure by Letters Patent is 1. A metal working machine including acolumn shaft; a saddle; a spindle mounted in the saddle for rotation andendwise movement; speed chan e gears; feed change gears, and a commonsliifting gear whereby the speed and feed change gears may be connectedfor. moving either the column shaft, the saddle or the spindle. I

2. A metal workin machine including a column shaft; a sad le; 9. spindlemounted in the saddle for rotation and endwise movement; "driving means;speed change gears connected with the driving means; feed change gears;a common shifting gea;

whereby the speed change gears may be confeed change gears connected tonected with the feed change gears for moving either the column shaft,the saddle or the spindle; a by-pass gear, and means for connecting theby-pass gear'with the common shifting gear for rapid movement.

3. A metal Working machine including a column shaft; a saddle; a spindlemounted in the saddle for rotation and endwise move ment; driving means;speed change gears connected with the driving means; feed change gears;a common shifting gear whereby the speed change gears may be connectedwith the feed change gears for moving either the column shaft, thesaddle or the spindle; a hand wheel, and connections between the handwheel and the common shifting gear whereby the column shaft, saddle orspindle may be moved by hand.

4. A metal workin machine including a column shaft; a-sadd le; a spindlemounted in the saddle for rotation and endwise movement; driving means;speedchange gears connected with the driving means; feed change gears; acommon shiftin gear whereby the speed change gears maydie connected withthe feed change gears for moving either the column shaft, the saddle orthe spindle, and reversing means between the speed and feed changegears.

5. A metal working machine includin a column'shaft; a saddle; a sleeverotatalfly mounted in and extending through the Serb dle; a spindle;slidably keyed in the sleeve: speedchange ears; feed change gears. and

and feed change gears may be connected for moving either the columnshaft, the saddle mon shifting gear whereby the speed and.

feed change gears may be connected for moving either the column shaft,the saddle or the spindle.

' 7. A metal workin machine including a column shaft; a-sad le; a sleeverotatably mounted in and extending through the saddle; a spindleslidably keyed in the sleeve; speed change gears connected to thesleeve; the speed change gears; means includin a shifting gear forconnecting the feed 0 ange gears for moving either the shaft column,saddle or spindle; a by-pass gear, and meanson the sleeve fordisconnecting the feed change gears from, and connecting the by-passgear with the shifting gear for rapid movement.

8. A metal working machine including a column shaft; a saddle; a sleeverotatably mounted inand extending through the'sa;

dle; a spindle slidably keyed in the sleeve a common shi ing gearwhereby the speed l 7 speed change gears connected to the sleeve; feedchange gears connected to the speed change gears; means including ashifting gear for connecting the feed change gears for moving either thecolumn shaft, saddle or spindle; a by-pass gear, and a sliding gear andclutch on the sleeve for disconnecting the feed change gears from andconnecting the bypass gear with the shifting gear for rapid movement.

9. A metal working machine including a column shaft; a saddle; a sleeverotatably mounted in and extending through the saddle; a spindleslidably keyed in the sleeve; speed change gears connected to thesleeve; speed series gears connected to the speed change gears; feedchange gears connected to the speed change gears; means including ashifting gear for connecting the feed change gears for moving either thecolumn shaft, saddle or spindle; a by-p'ass gear, and a sliding gear andclutch on the sleeve for disconnecting the feed change gears from andconnecting the by-pass gear to the shift ing gear for rapid moven'ient.

10. A metal working machine including a column shaft; a saddle; a sleeverotatably mounted in and extending through the saddle; a spindleslidably keyed in the sleeve; speed change gears connected to thesleeve; speed series gears connected to the speed change gears;reversing means connecting the speed change gears to the feed changegears; means including a shifting gear for connecting the feed changegears for moving either the column shaft saddle or spindle; a by-passgear, and a sliding'gear and clutch on the sleeve for disconnecting thefeed change gears from and connecting the by-pass gear to the shiftinggear for rapid movement.

11. A metal working machine including a column shaft; a saddle; a sleeverotatablivmounted in and extending through the sa die; a spindleslidably keyed in the sleeve; speed change gears connected to thesleeve;

speed series gears connected to the speed change gears; reversing meansbetween the speed change gears and the feed series gears; feed changegears connected to the feed series gears; means including a shiftinggear for connecting feed chan e gears for moving either the column shasaddle or spindle; a by-pass gear, and a sliding gear and clutch onthe'sleeve for disconnecting the feed change gears from and connectingthe by-pass gears to the shifting gear for rapid movement.

12. A metal working machine including; a saddle; a sleeve rotatablymounted in and extending through the saddle; a spindle slidably keyed inthe sleeve; a bull gear on an end of the sleeve; a shaft for driving thebull gear having speed change gears thereon;

a shaft having intermediate gears to mesh with respective change gears;a driving shaft having clutch members and sliding gears adapted to meshwith the intermediate gears and engage the clutch members, and a shafthaving a by-pass gear and a gear to mesh with a sliding gear.

13. A metal working machine including; a saddle; a sleeve rotatablymounted in and extending through the saddle; a spindle slidably keyed inthe sleeve; a bull gear on an end of-thc sleeve; a shaft for driving thebull gear having speed change gears and a friction gear thereon; a shafthaving intermediate gears to mesh with respective change gears; adriving shaft having clutch members and series gears adapted to meshwith the intermediate gears and engage the clutch members; a shafthaving a by-pass gear-and a gear to mesh with a sliding gear, andreversing means between the friction gear and feed change gears. 14. Ametal Working machine including; a saddle; a sleeve rotatably mounted inand extending through the saddle; a spindle slidably keyed in thesleeve; a bull gear on an end of the sleeve; a shaft for driving thebull gear having speed change gears and I i a friction gear thereon; ashaft'having inter mediate gears to mesh with respective change gears; adriving shaft having clutch members and sliding gears adapted to meshwith the intermediategears and engage the clutch members; a shafthavinga by-pass gear and a gear to mesh with the sliding gear; feed seriesgears; reversing means between the friction gear and the feed-seriesgears, and feed changegears connected to the feed series gears.

Intestimony whereof I have signed my name to this specification. I

FRANK b. JONES.

